Where: Niigata, Japan (37.3° N, 138.8° E: paleocoordinates 37.9° N, 138.2° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Shiroiwa Formation, Late/Upper Pliocene (3.6 - 2.6 Ma)
• formation-level stratigraphic resolution
Environment/lithology: coastal; sandy siltstone
Primary reference: M. Kato, I. Kabayashi, S. Kabayashi, I. Sasagawa, T. Shinmura, K. Tamura, H. Horikawa and M. Miyawaki. 2008. Discovery of the Hydrodamalinae (Sirenia, Mammalia) from the Late Pliocene Shiroiwa Formation in Nagaoka City, Niigata Prefecture. Bulletin of the Nagaoka Municipal Science Museum 43:1-20 [M. Uhen/M. Uhen]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 89861: authorized by Mark Uhen, entered by Mark Uhen on 17.06.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
| |
Cryptonatica janthostomoides moon snail | |
Antiplanes contraria snail | |
Bivalvia | |
"Yoldia notabilis" = Yoldia (Cnesterium) notabilis
"Yoldia notabilis" = Yoldia (Cnesterium) notabilis Yokoyama 1922 clam | |
Nuculana yokoyamai pointed nut clam | |
Acila insignis divaricate nutclam | |
Myadora japnica clam | |
Pandora pulchella clam | |
Macoma praetexta tellin clam | |
"Mya japonica" = Mya (Arenomya) arenaria
"Mya japonica" = Mya (Arenomya) arenaria Linnaeus 1758 softshell clam | |
"Triodonta borealis" = Lucinoma (Lucinoma) borealis, "Lucinoma annulata" = Lucinoma annulatum
"Triodonta borealis" = Lucinoma (Lucinoma) borealis Linnaeus 1767 clam
"Lucinoma annulata" = Lucinoma annulatum Reeve 1850 clam | |
| |
"Arca boucardi" = Tetrarca boucardi
"Arca boucardi" = Tetrarca boucardi Jousseaume 1894 clam | |
Mizuhopecten tokyoensis scallop
Mizuhopecten yokoyamae scallop | |
Mammalia | |
Hydrodamalis sp. Retzius 1794 Steller's sea cow |